National Society of Black Engineers NSBE Houston Space Chapter - PowerPoint PPT Presentation

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National Society of Black Engineers NSBE Houston Space Chapter

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Title: National Society of Black Engineers NSBE Houston Space Chapter


1
National Society of Black Engineers (NSBE)
Houston Space Chapter
  • Macho Mengi Many Eyes

NSBESAT 2 Ground-based Interferometric Telescope
Research
2
Macho Mengi Many Eyes NSBESAT 2 Ground-based
Interferometric Telescope Research
Project Overview
  • Introduction
  • Background
  • Goals and Objectives
  • Project Design Concept
  • Project Scope
  • Funding
  • Macho Mengi Project Team
  • (Roles and Responsibilities handout)
  • Questions and Comments

3
Background
  • NSBE's small satellites projects is for NSBE
    members to gain first hand experience at
    designing, building, and operating satellites.
  • Phase I
  • NSBESAT 1 Single space telescope
  • Phase II
  • NSBESAT 2 Formation of space telescopes that use
    interferometry to act as one large space
    telescope.

4
  • Why space telescopes?
  • Gives our Community direct access to the Space
    Program
  • Specifically target
  • Communities
  • Grade Schools
  • Universities
  • Astronomers and Astrophysicist
  • Whats so interesting about space?

5
Telescope Technology
James Webb
Basic Telescope
Observatory
Hubble
MOST
Multi-Satellite Telescope
6
Basic Operation
7
Very Large Telescope Interferometer (VLTI)
8
  • Interferometry A technique of collecting light
    from several
  • telescopes and combining them to reveal details
    much
  • smaller than those visible by a single
    telescope.
  • Light beams from each telescope, corrected for
    atmospheric turbulence, are brought together and
    combined.
  • Computers process data from light sensors to form
    an image similar to that which would be obtained
    using a larger telescope than the individual
    ones.

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11
Simple Long-Baseline Interferometer
Star
Star Light
Delay B sin?
90º
Telescope 2
Telescope 1
Baseline B
?
Computer Image reconstruction
Optical Delay Line
Beam combiner
Original image shows Fringes
12
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14
Angular Resolution
  • Angular resolution describes the resolving power
    of any image-forming device (optical or radio
    telescope, microscopes, cameras, or an eye).
  • The term resolution or minimum resolvable
    distance is the minimum distance between
    distinguishable objects in an image.

The angular resolution R can usually be
approximated by
Single telescope case
Telescope array case
? wavelength of the observed radiation D di
ameter of the telescope's mirror or lens.
B length of separation of the telescopes in the
array (baseline).
15
Angular Resolution(Calculated examples)
Wavelength 580 nm - yellow light
.001 arcsecond -- Equivalent to resolving a
target 2 meters (6.6 ft) across at the distance
between the Earth and Moon.
16
Project Goals and Objectives
  • ? Our primary goal Have a minimum of three NSBE
    members with the necessary experience to become
    subject matter experts to contribute with the
    development of NSBESAT 2.
  • - Our objective Have a complete and working
    small ground-based interferometric telescope to
    be used as a proof of concept prototype and
    training tool for NSBESAT 2.

17
Project Design Concept
18
Macho Mengi
  • Requirements
  • Four reflective telescopes
  • Transportable
  • Moveable baselines and formations
  • Stable
  • Configured for visible light
  • Design
  • Similar to COAST interferometer

19
COAST Interferometer Testbed Univ. of Cambridge
Built 1988
20
COAST Beam Combining Table
21
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24
Image reconstructions of Capella, from
data obtained on the nights of the 13th (a) and
28th (b) September 1995.
25
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26
Project Scope
27
Funding
  • ? Funding Authority for this project shall be in
    accordance with the existing chapter bylaws of
    the NSBE Houston Space Chapter.
  • The bulk of our financing should come from
    corporate sponsors, donors, and federal grants.

  • Once we have a better idea of our design and
    specifications - receiving donated equipment
    would be our best bet.

28
Funding Donated Equipment
  • Key Philosophy Linking Needs with Benefits
  • We are not looking for "junk", but sometimes
    companies are willing to donate some of their
    latest products for key benefits
  • Free Advertising at Major Events
  • Tax write-offs NSBE HSC is a 501(c) non-profit
    organization
  • Free testing
  • The process can be as simple as reporting to them
    how well their product performed under real world
    conditions.
  • Companies may be more willing to donate
    components out of their manufactured surplus
    rather than giving cash.
  • The value of donated components may far exceed
    whatever they would have given in actual
    dollars.

29
See Handout for Roles and Responsibilities
30
Macho Mengi Team
Dr. Robert Howard Consultant Michael McCul
lar
Project Director
  • Kevin Calvin
  • Optics Director
  • Chemuttaai Langat
  • Mechanical engineer
  • Darnell Cowan
  • Acting Mechanical Director

Visit NSBEs Houston Space Chapter Homepage
http//www.nsbe-hsc.org
31
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